import java.util.Scanner;

public class fu {
    public static void main(String[] args) {
        System.out.println("Please input the number of particle:");
        Scanner scanner =new Scanner(System.in);
        Double a = scanner.nextDouble();
        System.out.println("Number of operations is:"
                +3.39E16*3600/(a*Math.pow(10,8)));


    }
}
